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Combustex BMS-2000 [5.03] Operations Manual -
3. CONFIGURATION
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This value sets the amount of time the BMS will allow for the flame to reach the second set point. The
ignition sequence is halted if the flame fails to reach the second set point in this time.
Purge is a prescribed time delay before relight on flame-fail. This value sets the pre- and post-purge time.
Preset as required and password protected.
Pre-purge is a time delay before
any
start. Pre-purge utilizes the same timer as the Purge function.
The igniter output can be a steady 24VDC, or a pulsed (5 Hertz, 20% duty cycle) 24 Volt output.
Note:
The BMS-2000 will not initiate an auto re-ignition unless the unit was in normal operation at the
time of flame fail and the purge timer has timed out.
• Contact: The unit will rely solely on the contact input from a flame sensor. B149.3 compliant.
• Thermocouple: The unit relies solely on the pilot T/C temperature for flame detection.
• Aux. Contact: The unit will require both T/C and Contact inputs to be valid for flame detection.
If yes, then first momentary contact closure will try and clear shutdowns. Second momentary contact will
achieve remote start if shutdowns no longer exist.
7
Flame T/C 2nd Level Timer
0 - 5.0 Minutes
8
Purge Timer
0 - 10.0 Minutes
9
Pre-purge
Yes / No
10
Ignition
Steady / Pulsed
11
Relight Attempts
0 / 1 / 2 / 3
12
Flame Detection
Contact / T/C / Aux. Contact
13
Remote Start
Yes / No
